The Cumulative Human Impact on Marine Ecosystems indicator predicts the impact on marine biodiversity and ecosystems from multiple anthropogenic stressors.

Cumulative impact assessments model, or predict, the overall impact from a suite of stressors based on the unique and cumulative vulnerability of biodiversity to anthropogenic stressors such as pollution, climate change and fishing. An increase in the cumulative impact score indicates that a stressor or suite of stressors is having an increased impact on biodiversity. As cumulative impact scores approach zero, biodiversity is decreasingly threatened by human activities.